大约有 47,000 项符合查询结果（耗时：0.0518秒） [XML]
MySQL Select minimum/maximum among two (or more) given values
... watch out if NULL is likely to be in a field value ...
SELECT LEAST(NULL,NOW());
and
SELECT GREATEST(NULL,NOW());
both return null, which may not be what you want (especially in the case of GREATEST)
share
|...
Set Locale programmatically
...his answer, since configuration.locale was deprecated from API 24, you can now use:
configuration.setLocale(locale);
Take in consideration that the minSkdVersion for this method is API 17.
Full example code:
@SuppressWarnings("deprecation")
private void setLocale(Locale locale){
SharedPrefU...
Vim users, where do you rest your right hand? [closed]
... avoid overwriting base Vim features: Toss whatever used to be on ; to the now-empty h button
As a cute bonus, the "l" key now stands for "left" ;)
noremap l h
noremap ; l
noremap h ;
The previous "runners-up", who both use "left-down-up-right" layout:
Choice 1: "hjkl"
@al...
How can I check if the current date/time is past a set date/time?
...r, if you are using UTC dates (as you should), prefer to use new DateTime("now", new DateTimeZone('UTC')). This will prevent your app from misunderstandable bugs in dates. i advise you to store it in a function static variable, a class static or somewhere else in your running process...
...
The first day of the current month in php using date_modify as DateTime object
...e for, its not first day at 0:00 o'clock, its first day and as the time is now. This fixes it strtotime('first day of this month 00:00:00', time()).
– Kalle H. Väravas
Sep 1 '14 at 6:36
...
Should I impose a maximum length on passwords?
...case:
Avoid using this site like the plague if possible. They obviously know nothing about security.
If you truly must use the site, make sure your password is unique - unlike any password you use elsewhere.
If you are developing a site that accepts passwords, do not put a silly password limit, ...
Decimal number regular expression, where digit after decimal is optional
...
Thanks Pete, well spotted. The answer has now been corrected, by adding extra parenthesis so it behaves as intended. It is now written like ^A?(B|C)$. Previously, it was written like ^A?B|C$ which actually means (^A?B)|(C$) which was incorrect. Note: ^(A?B|C)$ is als...
Which MySQL data type to use for storing boolean values
...
This is very clever! I used to write clever code, now I avoid it like the plague. I now want my code to have crystal clear intent, not just correct behaviour. My advice? Only do this if you want to confuse anyone who has to support the code/database. For instance, in PHP bot...
hasNext in Python iterators?
...
@Giorgio, there is no way to know whether another element exists without executing the code that generates it (you don't know whether the generator will execute yield or not). It is, of course, not difficult to write an adaptor that stores the result of n...
Convert seconds to HH-MM-SS with JavaScript?
...
Don't you know datejs? it is a must know.
Using datejs, just write something like:
(new Date).clearTime()
.addSeconds(15457)
.toString('H:mm:ss');
--update
Nowadays date.js is outdated and not maintained, so use...